Add bench for libcollection.

bench/Makefile

@@ -98,6 +98,14 @@ bench-sparsepp0:
 	@./bench-sparsepp.exe 42
 	@./bench-sparsepp.exe 43
 
+# LIBCOLLECTION shall point to the directory where the 'src' directory is.
+bench-libcollection:
+	if test -n "$${LIBCOLLECTION}" ; then make bench-libcollection0 ; else echo "Nothing to be done." ; fi
+
+bench-libcollection0:
+	$(CC) $(CFLAGS) $(CPPFLAGS) -I "$${LIBCOLLECTION}/include" -L "$${LIBCOLLECTION}" -static bench-libcollection.c -lcollectc -o bench-libcollection.exe
+	@./bench-libcollection.exe 20
+
 bench-plain:
 	$(CC) $(CFLAGS) $(CPPFLAGS) bench-plain-c.c -o bench-plain-c.exe
 	@./bench-plain-c.exe

bench/bench-libcollection.c

@@ -0,0 +1,57 @@
+#define NDEBUG
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+
+#include "array.h"
+
+#include "common.h"
+
+/********************************************************************************************/
+
+static void test_array(size_t n)
+{
+  Array *a1, *a2;
+  enum cc_stat stat;
+
+  stat = array_new(&a1);
+  if (stat != CC_OK) abort();
+  stat = array_new(&a2);
+  if (stat != CC_OK) abort();
+  
+  for(size_t i = 0; i < n; i++) {
+    stat = array_add(a1, (void*) (uintptr_t)rand_get() );
+    if (stat != CC_OK) abort();
+    stat = array_add(a2, (void*) (uintptr_t)rand_get() );
+    if (stat != CC_OK) abort();
+  }
+  unsigned int s = 0;
+  for(unsigned long i = 0; i < n; i++) {
+    void *e, *f;
+    stat = array_get_at(a1, i, &e);
+    if (stat != CC_OK) abort();
+    stat = array_get_at(a2, i, &f);
+    if (stat != CC_OK) abort();
+    s += ((unsigned int)(uintptr_t) e) * ((unsigned int)(uintptr_t) f);
+  }
+  g_result = s;
+
+  array_destroy(a1);
+  array_destroy(a2);
+}
+
+
+/********************************************************************************************/
+
+int main(int argc, const char *argv[])
+{
+  int n = (argc > 1) ? atoi(argv[1]) : 0;
+  if (n == 20)
+    test_function("Array  time", 100000000, test_array);
+  exit(0);
+}
+